title: Electrosorptive desalination by carbon nanotubes and nanofibres electrodes and ion-exchange membranes.
abstract: A novel membrane capacitive deionization (MCDI) device, integrating both the advantages of carbon nanotubes and carbon nanofibers (CNTs-CNFs) composite film and ion-exchange membrane, was proposed with high removal efficiency, low energy consumption and low cost. The CNTs-CNFs film was synthesized by low pressure and low temperature thermal chemical vapor deposition. Several experiments were conducted to compare desalination performance of MCDI with capacitive deionization (CDI), showing that salt removal of the MCDI system was 49.2% higher than that of the CDI system. The electrosorption isotherms of MCDI and CDI show both of them follow Langmuir adsorption, indicating no change in adsorption behavior when ion-exchange membranes are introduced into CDI system. The better desalination performance of MCDI than that of CDI is due to the minimized ion desorption during electrosorption.
authors.affiliation: Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Li
authors.forename: Yang
authors.initials: Y
authors.lastname: Gao
authors.forename: Likun
authors.initials: L
authors.lastname: Pan
authors.forename: Yanping
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yiwei
authors.initials: Y
authors.lastname: Chen
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Sun
mesh_terms: D000327:Adsorption; D002244:Carbon; D003188:Composite Resins; D003247:Conservation of Natural Resources / Q000379:methods; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D007477:Ions; D037742:Nanotubes, Carbon; D012965:Sodium Chloride / Q000302:isolation & purification*
chemical_list: D003188:Composite Resins; D007477:Ions; D037742:Nanotubes, Carbon; D012965:Sodium Chloride; D002244:Carbon